Replace Revert Strings with Custom Errors

[Abd-Standard]

Description
Replace generic revert messages with Solidity custom errors to reduce deployment size and gas usage.

Acceptance Criteria
All applicable revert strings use custom errors.
Error names are descriptive.
Tests confirm expected errors.

[AbuTuraab]

@AbuTuraab has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Hi,

I’d like to request assignment to this issue.

As a full-stack developer working actively in the Stellar ecosystem, I understand how important robust automation is for projects that combine Soroban smart contracts, backend services, and frontend applications. A reliable CI/CD pipeline is the backbone of safe contract development, deterministic builds, and predictable testnet releases.

During the previous waves of contributions, I worked on several Stellar-related repos where I resolved issues such as:
Frontend implementations.
Misconfigured GitHub Actions leading to failing builds
Missing or incomplete Soroban contract test pipelines
Frontend pipelines that didn’t catch build/lint errors
Inefficient caching (Rust, pnpm) that slowed down CI
Incorrect workflow permissions affecting deployment and artifact uploads
These issues helped me develop a strong sense of what healthy CI/CD should look like for blockchain projects.

Relevant Skills
Full-stack expertise with Soroban, Rust, TypeScript, and modern frontend tooling
Strong experience designing and maintaining GitHub Actions workflows
Familiar with contract testing, reproducible builds, and blockchain dev best practices
Experience with pnpm-based frontend CI pipelines (install, lint, type-check, build)
Comfortable implementing secure deployment flows, secret management, and workflow permission hardening
Confident in making pipelines faster and more reliable using smart caching strategies

ℹ️ Repo Maintainers: To accept this application, review their application or assign @AbuTuraab to this issue.

[JoaquinSkorg]

@JoaquinSkorg has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Hello maintainer, kindly assign this issue to me. I'm a blockchain developer with experience in web2/web3. I'll deliver in 3 hours max

ℹ️ Repo Maintainers: To accept this application, review their application or assign @JoaquinSkorg to this issue.

[vicajohn]

@vicajohn has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Hi, I would love to work on this

ℹ️ Repo Maintainers: To accept this application, review their application or assign @vicajohn to this issue.

[drips-wave]

Congratulations, @vicajohn! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on July 30, 2026.

🧑‍💻 @vicajohn: Please resolve the issue such that the repo's maintainers have enough time to review your contribution before the due date. You'll earn Points for completing the issue on-time, which will make you eligible for a share of the Stellar Wave Program's reward pool.

Warning

When opening a PR, please link it to this issue to ensure it gets tracked accurately. Points are awarded when this issue is marked as completed by the maintainer.

🤠 Repo maintainers: Please keep an eye on the contributor's progress and review their work before the due date. You can manage this issue, including adjusting its complexity and points, here.

🌊 Happy Wave 🌊

[grantfox-oss]

🎉 This issue has been marked as completed on GrantFox!

@vicajohn's PR #522 was approved and merged by @Abd-Standard.

🏆 @vicajohn: You earned 35 FoxPoints for this contribution! Your current tier: Explorer (484 total points). Track your full progress on GrantFox.

👏 Great work, @vicajohn! Keep contributing to Core-Foundry.